WO2021107821A1 - Gaîne de câble pour ligne de câble - Google Patents
Gaîne de câble pour ligne de câble Download PDFInfo
- Publication number
- WO2021107821A1 WO2021107821A1 PCT/RU2020/050345 RU2020050345W WO2021107821A1 WO 2021107821 A1 WO2021107821 A1 WO 2021107821A1 RU 2020050345 W RU2020050345 W RU 2020050345W WO 2021107821 A1 WO2021107821 A1 WO 2021107821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cable
- electrically conductive
- housing
- conduit
- segment
- Prior art date
Links
- 239000002861 polymer material Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003989 dielectric material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010616 electrical installation Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229920001940 conductive polymer Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000004807 localization Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
Definitions
- the invention relates to electrical wiring products, in particular, to high-voltage cable lines for the transmission of electricity, mainly used for underground cable routes, and generally relates to facilitating the detection of breakdown points of the sheaths of the cable laid in the pipe of the cable line.
- cable lines are widely used, which, as a means for placing a cable, comprise a conduit having a tubular body, in the interior of which the cable is laid.
- the tubular conduit body can be made as a single pipe or in the form of multiple pipes docked together.
- the conduit of the cable line under consideration is a tubular body containing a polyethylene wall, intended for laying along its length, in the inner space, a power cable (6-500 kV) equipped with an outer polymer sheath.
- the considered design of the cable line conduit does not provide the possibility of searching for the location of damage to the outer sheath of the power cable using methods known from the prior art, based on the search and localization on the cable line route using devices used for this purpose, the place where the test current from the conductive screen of the power cable through the damaged outer shell it enters the ground.
- the outlet of the current into the ground is prevented by the wall of the case, made of polyethylene, which is a dielectric, which does not possess electrical conductivity properties in the direction from its inner surface to the outer surface.
- a solution is known [RU 186701], according to which a solution is disclosed for a cable conduit of a cable line having a tubular body, the wall of which is made of a polymer material and is made to ensure its electrically conductive properties, which make it possible for current to flow through the wall in the direction from its inner surface to the outer surface, while the ratio of the diameter of the inner surface of the housing wall to the diameter of the outer sheath of the cable is at least 1.5.
- the specified ratio was chosen for the purpose of a tangible decrease in the heating of the soil surrounding the cable line, and the electrically conductive properties of the polymer wall of the tubular body are organized in the direction from its inner surface to the outer surface throughout its entire thickness, that is, in the transverse (radial) direction and can be pointwise distributed along the body, including with the grouping of electrically conductive sections along an annular contour with the distribution of such sections along the length of the conduit pipe.
- the technical problem is the possibility of testing and finding the place of damage to the outer sheath of an electric cable placed in a protective tubular polymer conduit using methods based on detecting the location of the current exit into the ground.
- the technical result achieved by the claimed invention is to increase the accuracy, reliability and speed of localization of cable damage points in the housing of the cable line of the cable line.
- the cable line is used, including a tubular body, the wall of which is made of a polymer material, and equipped with a through channel for laying an electric cable along its length, which differs from the prototype in that the tubular body is segmented, including a combination of at least two longitudinal body and electrically conductive segments, alternating along an annular contour, mated to each other, located along the entire length of the body, jointly forming a closed rigid contour of the body wall, with the provision of current flow through the electrically conductive segment in the direction from the inner surface of the body to its outer surface.
- the wall of the body is made of multilayer, while the electroconductive properties of each layer of the body and electrically conductive segments in thickness correspond to the purpose of each segment.
- At least one electrically conductive segment is made in the form of an insert, with the possibility of attachment in the housing along the longitudinal side sections of the segment.
- At least one electrically conductive segment is made of a compound having electrical conductivity.
- the housing and electrically conductive segments can be made of different sizes.
- the inner surface of the housing is additionally provided with a coating that has a reduced resistance to electric current.
- the outer surface of the housing is additionally provided with a coating having a reduced resistance to electric current.
- the body and electrically conductive segments are made of materials with different electrical resistance.
- the housing segment can be made of dielectric materials.
- FIG. 1 is a solution of a segmented tubular cable conduit body according to the invention, where: a) a cross-section; b) longitudinal section
- FIG. 2 direction of current output in case of damage to the cable sheath of a cable line with a segmented conduit body.
- the cable conduit of the cable line is provided with a tubular body made of segmented and consisting of body 1 and electrically conductive 2 segments, mated to each other in the longitudinal direction along the entire length of the body.
- the segments forming the body of the conduit have a thickness that ensures the formation of uniform outer and inner surfaces of the body of a given shape.
- the body segments are made in one layer.
- the tubular conduit body may be multilayer.
- the electrically conductive properties of each layer of the structural and electrically conductive segments in thickness correspond to the purpose of each segment.
- a cable conduit Since one of the main tasks solved by a cable conduit is the possibility of using a cable line both in surface and underground cable routes using cost-effective and technologically advanced laying methods, in particular, the method of horizontal directional drilling, its body is preferably made of materials ensuring the placement and maintenance of the position of the cable in the place of the cable route, as well as the protection of the cable from mechanical damage and external influences during its operation.
- the body and electrically conductive segments that form the conduit body together have a sufficient degree of rigidity, elasticity and chemical resistance to aggressive media and unfavorable operating conditions that provide the required operational characteristics of the cable conduit of the cable line.
- due to the use for the manufacture of body segments of the wall of the housing of the conduit of a polymeric material that is resistant to corrosion and mechanical stress, flexibility, lightness, durability increases the ease of use and reliability of the claimed cable line.
- the electrically conductive conduit body segments are made with a sufficient degree of mechanical strength and chemical resistance comparable to those of the body segments, however, in a preferred embodiment, the materials of the body and electrically conductive segments have different electrical resistance to current.
- the housing segments can be made of dielectric materials, for example, thermoplastic polymer materials. Then, as for electrically conductive segments, materials are chosen that have electrical resistance for current, providing the ability to withdraw current from the inner cavity of the conduit to the outside in case of damage to the outer sheath of the cable located in the cable line.
- the mating structural and electrically conductive segments can have various configurations and geometric dimensions, depending on the operating conditions, the configuration of the conduit body and cable channel, as well as cable lines (cable) placed in the conduit body, and are interconnected to form a single tubular contour of the body with the specified mechanical parameters of the conduit.
- the inner surface of each segment is in contact with the inner surface and space of the tubular body, and the outer surface with the outer environment (soil), providing the transfer of electric current through the electrically conductive segment from the inner surface of the tubular body to the outside, where the current propagates into the ground and can be detected by methods known from the prior art.
- the electrically conductive segment can be made in the form of a long insert for the entire length of the body, with attachment along the adjacent longitudinal sides of the adjacent body segments.
- Fastening can be carried out, for example, by making adjacent segments by coextrusion, fastening adjacent surfaces with an adhesive bond, using mechanical fastening, for example, by fastening a tongue-and-groove, as well as by another method known from the prior art for fastening adjacent segments used in body parts of pipelines and cable lines. It is advantageous to make the mating points of the electrically conductive segments with the body segments in a sealed design.
- polymeric materials having a specific volume resistivity of not more than 10,000 Ohm-m.
- composite polymer materials based on various polymers (thermo-, reactor-, elastoplastics) containing electrically conductive fillers (soot, graphite, carbon, metal and metallized fibers, metal powder, etc.) can be used as electrically conductive polymer materials, or polymeric materials in which the molecules themselves or supramolecular formations constructed in a certain way have electrical conductivity.
- the electrically conductive segment may also contain, if necessary and preferably in combination with the above-listed conductive particles or fibers, initially electrically conductive polymers such as polyacetylene, polythiophene, polyaniline or polypyrrole, or ionomers containing alkali and / or alkaline earth metal ions or mixtures thereof.
- initially electrically conductive polymers such as polyacetylene, polythiophene, polyaniline or polypyrrole, or ionomers containing alkali and / or alkaline earth metal ions or mixtures thereof.
- cable 3 (figure 2) in a tubular conduit, the wall of the body of which is made to ensure its electrically conductive properties, due to the presence of longitudinal electrically conductive segments, causing the possibility of current flow through the wall in the direction from its inner surface to the outer surface, in the claimed cable line organized the path for the current generated in the inner space of the case when the outer sheath of the cable is damaged, through the wall of the case outside of it.
- the exit of current from the conduit body into the surrounding soil can be difficult due to its low electrical conductivity due to prolonged exposure of the soil to the high operating temperature of the cable.
- the core temperature of a high-voltage cable in normal operation reaches 90 ° C
- the temperature of its outer sheath reaches 80 ° C. Heating the soil leads to the absence or minimization of the moisture content that fills the gaps between soil particles and has electrical conductivity properties, which leads to a decrease in the electrical conductivity of the soil.
- Placing the cable in an electrically conductive polymer tubular casing helps to reduce the heating temperature of the soil surrounding the cable line and, accordingly, to reduce the negative effect of heating on the electrical conductivity of the soil, the greater the larger the gap between the cable and the tubular casing, which is determined by the ratio of the casing and cable diameters.
- a current path is organized from the inner space of the housing, where it enters from the surface of the cable from the damaged outer sheath, through the wall of the housing outside of it into the surrounding soil, where the current can be recorded by devices searching for the location of cable damage.
- the body wall can be coated with an electrically conductive material on its inner, outer surface, as well as on both of its surfaces (multilayer wall).
- the conduit body can be made as a single pipe or as multiple pipes docked together.
- a power cable (up to 500 kV) containing a core, core insulation, metal shield and outer sheath can be used predominantly as an electrical cable.
- the cable is installed inside the tubular body mainly with the provision of contact areas (mechanical and / or electrical) of its outer sheath with the inner surface of the body.
- the conduit can also contain couplings, end caps, and the like (not shown), without changing the design of the segmented conduit body according to the claimed invention.
- the device works as follows.
- the very fact of the flow of the test current produced by the test setup connected to the cable means that the cable sheath is really damaged somewhere, and the current goes into the ground somewhere.
- the place where the test current exits from the cable into the ground, fixed by the devices, will indicate the exact location of the fault on the cable line route.
- the segmented conduit body allows minimizing the cost of troubleshooting by minimizing the time and labor costs for determining the exact location of cable damage in the cable line route and opening the conduit body to provide access to the cable for repair.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Insulated Conductors (AREA)
Abstract
La présente invention concerne des articles de montage électrique, notamment des lignes de câbles haute tension de transmission d'énergie électrique, principalement, que l'on utilise dans la pose de câbles souterrains. Le résultat technique de la présente invention consiste en une augmentation de la précision, de la fiabilité et de la vitesse de localisation des lieux d'endommagement d'un câble dans le corps d'une gaine de câble de ligne de câble. Ce résultat technique est atteint en utilisant une gaine de câble pour ligne de câble, comprenant un corps cylindrique fait d'un matériau polymère, comportant un canal traversant pour le passage d'un câble électrique, et qui est segmenté de manière à comprendre une combinaison d'au moins deux segments de corps et électro-conducteurs longitudinaux, connectés entre eux et alternant selon un contour annulaire, lesquels sont disposés sur toute la longueur du corps et forment ensemble un contour rigide clos de la paroi du corps, ceci de manière à assurer le passage du courant dans le segment électroconducteur dans une direction allant de la surface interne du corps vers sa surface externe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20891715.3A EP4068541A4 (fr) | 2019-11-25 | 2020-11-24 | Gaîne de câble pour ligne de câble |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2019138038 | 2019-11-25 | ||
| RU2019138038 | 2019-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021107821A1 true WO2021107821A1 (fr) | 2021-06-03 |
Family
ID=76128927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2020/050345 WO2021107821A1 (fr) | 2019-11-25 | 2020-11-24 | Gaîne de câble pour ligne de câble |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4068541A4 (fr) |
| WO (1) | WO2021107821A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU223822U1 (ru) * | 2023-12-14 | 2024-03-06 | Общество с ограниченной ответственностью "ЭнергоТэк" | Труба кабельной линии |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265880B1 (en) * | 1999-06-15 | 2001-07-24 | The United States Of America As Represented By The Secretary Of The Air Force | Apparatus and method for detecting conduit chafing |
| RU186701U1 (ru) * | 2018-10-16 | 2019-01-30 | Общество с ограниченной ответственностью "ЭнергоТэк" | Кабельная линия |
| RU188229U1 (ru) * | 2017-12-28 | 2019-04-03 | Общество с ограниченной ответственностью "ЭнергоТэк" | Электропроводящая полимерная труба кабель- канала для прокладки электрического кабеля |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2312726A (en) * | 1996-05-01 | 1997-11-05 | Stephen Mcdermott | Plastics pipes |
| DE19833493A1 (de) * | 1998-07-24 | 2000-01-27 | Wagner International Ag Altsta | Schlauch zum Fördern von fließfähigen Stoffen |
| JP2001271971A (ja) * | 2000-03-27 | 2001-10-05 | Piolax Inc | 導電性樹脂チューブ及びその接地構造 |
| JP4540881B2 (ja) * | 2001-05-30 | 2010-09-08 | 矢崎総業株式会社 | 電線保護用チューブ |
| US20070144756A1 (en) * | 2003-11-12 | 2007-06-28 | Huberag | Hose for conveying media that generate electrostatic charges, especially powdery media |
| JP2013099153A (ja) * | 2011-11-02 | 2013-05-20 | Sumitomo Wiring Syst Ltd | 経路維持部材付コルゲートチューブおよびワイヤーハーネス |
| NO337255B1 (no) * | 2014-01-09 | 2016-02-29 | Arges As | Anordning for transport av fôr |
| DE102017105807B3 (de) * | 2017-03-17 | 2018-08-16 | Schlemmer Holding GmbH | Mehrkomponenten-Extrusionsspritzkopf, Mehrkomponenten-Extrusionsanlage und Verfahren zum Herstellen eines Verbundschlauchs |
| DE102017205031A1 (de) * | 2017-03-24 | 2018-09-27 | Continental Automotive Gmbh | Kraftstoffrohr und Kraftstoffleitung |
-
2020
- 2020-11-24 EP EP20891715.3A patent/EP4068541A4/fr active Pending
- 2020-11-24 WO PCT/RU2020/050345 patent/WO2021107821A1/fr unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6265880B1 (en) * | 1999-06-15 | 2001-07-24 | The United States Of America As Represented By The Secretary Of The Air Force | Apparatus and method for detecting conduit chafing |
| RU188229U1 (ru) * | 2017-12-28 | 2019-04-03 | Общество с ограниченной ответственностью "ЭнергоТэк" | Электропроводящая полимерная труба кабель- канала для прокладки электрического кабеля |
| RU186701U1 (ru) * | 2018-10-16 | 2019-01-30 | Общество с ограниченной ответственностью "ЭнергоТэк" | Кабельная линия |
Non-Patent Citations (2)
| Title |
|---|
| NOVOSTI ELEKTROTEKHNIKI, vol. 82, no. 4, 2013, pages 78 - 83 |
| See also references of EP4068541A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU223822U1 (ru) * | 2023-12-14 | 2024-03-06 | Общество с ограниченной ответственностью "ЭнергоТэк" | Труба кабельной линии |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4068541A4 (fr) | 2024-05-08 |
| EP4068541A1 (fr) | 2022-10-05 |
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